If you are thinking to go coilover, I would highly recommend the strano afco kit. It does great at the track and on the street in my car at over 500 hp and low 10's. Another kit I would look into is the ride tech kit.

I have a friend who went with menscer afco coilovers. On a whim he asked menscer what I should run and said menscer told him I picked the best kit for my use of the car. FWIW.

If you are keeping the stock spring perches, I would recommend the bilstein HD